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From "Yonik Seeley (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-2664) Disable/enable autocommit on the fly
Date Tue, 23 Aug 2011 21:04:28 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13089760#comment-13089760
] 

Yonik Seeley commented on SOLR-2664:
------------------------------------

Rather than disabling autoCommit globally (for all clients), shouldn't it just disable it
for that particular client?  A different client may be adding some time sensitive documents.

We could add a "batch=true" that is a higher level concept, and does the following:
  - won't trigger autocommits
  - updates aren't guaranteed to be seen by real-time-get (and thus logging all of the document
stored fields wouldn't be necessary)

Another random thought: if an explicit "commit=true" is specified in the URL, perhaps auto
commit could be disabled? That could either take the place of a "batch" parameter, or at least
imply "batch=true".


> Disable/enable autocommit on the fly
> ------------------------------------
>
>                 Key: SOLR-2664
>                 URL: https://issues.apache.org/jira/browse/SOLR-2664
>             Project: Solr
>          Issue Type: New Feature
>          Components: update
>    Affects Versions: 4.0
>            Reporter: Simon Rosenthal
>            Priority: Minor
>             Fix For: 4.0
>
>         Attachments: SOLR-2664.patch
>
>
> There are occasions when although autocommit is configured, it would be desirable to
disable it temporarily - for instance when batch adding/updating a set of documents which
should be committed atomically (e.g. a set of price changes).
> The patch adds <disableAutoCommit/> and </enableAutoCommit> commands to XMLUpdateHandler,
and also adds a disableAutoCommit=true|false attribute to the <add> element - this will
disable autocommit until the terminating </add> at the end of the XML document is reached.
> At present, the autocommit state will not survive a core reload.
> It should be possible to extend this functionality to SolrJ, CSVUpdatehandler ( and JSONUpdateHandler
?)

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